單項(xiàng)選擇題

On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.

A.vessel being towed
B.fishing vessel engaged in trawling
C.vessel at anchor warning you of her location
D.power-driven pilot vessel on station underway

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單項(xiàng)選擇題

On the approach of a warm front the barometric pressure usually（）.

A.falls
B.rises
C.is steady
D.is unreliable

單項(xiàng)選擇題

On a nautical chart，the inner ring of a compass rose indicates（）.

A.true directions
B.compass error
C.deviation
D.magnetic directions

On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.

你可能感興趣的試題

On the approach of a warm front the barometric pressure usually（）.

On a nautical chart，the inner ring of a compass rose indicates（）.

On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.